h2{background:#eee;}
ul{list-style-type: none;}
#GoTop{ position: fixed; right: 30px; bottom: 20px;}
a {
    color: #0366d6;
    text-decoration: none;
}
.light{color:#cccccc;}
pre{color: #ca70e8}

#GoTop{
	display: inline-block;
    padding: 10px;
    text-align: center;
	border: 1px solid #000;
}
#GoTop:hover{
	background:#ddd;
}

/*本页R代码过长: 最长n px,超过了出现滚动条*/
pre{max-height:300px; overflow:scroll; background:#000;width:80%; padding:0 10px;}

pre {
  /*
  background: #303030;
  color: #f1f1f1;
  */
  padding: 10px 16px;
  border-radius: 2px;
  border-top: 4px solid #00aeef;
  -moz-box-shadow: inset 0 0 10px #000;
  box-shadow: inset 0 0 10px #000;
  counter-reset: line;
}

pre span:before {
  counter-increment: line;
  
  content: counter(line);
  display: inline-block;
  border-right: 1px solid #ddd;
  padding: 0 .5em;
  margin-right: .5em;
  color: #888
}

.indent2{padding-left: 2em;}


.QQ{color:red;}

iframe{
    border: none;
	background: white;
}